An iron rod is placed parallel to magnet...

An iron rod is placed parallel to magnetic field of intensity `2000 Am^-1`. The magnetic flux through the rod is `6xx 10^-1` Wb and its cross-sectional area is `3 cm^2`. The magnetic permeability of the rod in Wb `A^-1 m^-1` is

`10^(-1)`

`10^(-2)`

`10^(-3)`

`10^(-4)`

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